On Thu, 13 Dec 2018 13:30:50 +0000 Jan Petrous <jan.petr...@nxp.com> wrote:
> Hi, > > am I understand it right that I can not use NAPI-powered design in case > when there is only one rx queue and one tx queue (only two > dma channels) usable for data transfer with the ethernet controller for > all interfaces (2 ports or more)? > > I could imagine there would be possibility to declare for example rx > queue sharable between napi interfaces, but I was not able to find > anything like that. > > I agree that it is a bit strange configuration but we have to support > such corner case (when other dma channels are used by independent > systems). > > I seems like I have to create two drivers - one with napi, when at > least the same number of dma channels are free for use and second one > without napi (because of not enough dma channels). > > > Thanks. > /Jan It is possible. Sky2 for some hardware has a single NAPI (on port 0) and if the card is dual port the napi of port 0 is used by port 1.
